Rotary motor.



1. M. OGRADY.

ROTARY MOTOR.

APPLICATION FILED JULY 30,1915. i igfl'l ffi fim fiw I Patented June 25, 1918.

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ROTARY MOTOR.

APPLICATION FILED JULY 30.1915 lfim fim Patented June 25, 1918.

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J. M. OGRADY.

ROTARY MOTOR.

APPLICATION FILED JULY 30. 1915.

Patenmi June 25, 1918.

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JOHN 1W. GGRADY, OF GHIG'AGU, ILLINOIS,

RG1 AB'Y MUTUR.

Application filed July 30, 1915.

To all whom it may concern.

Be it known that l, Jenn- M. O liiuor, a citizen of the United States, residing at Chicago, in the county of Cook and State .5 of Illinois, have invented. new and useful Improvements in Rotary.Motors, of which. the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to a rotary engine and is concerned chiefly with features which are equally valuable whether the motive fluid be steam or an explosive mixture. The invention is concerned especially with few tures designed to secure a simplicity of con struction and quietness in operat'mn, such features being hereinafter described and illustrated in the drawings and more par-.

ticularly defined in the appended claims. In the drawings:

Figure 1 is a sectional View taken in a plane perpendicular to the shaft axis and illustrating a motor embodying this inven- Fig. 2 is an axial section taken as indicated at line E 2 on Fig. 1.

Fig. 3 is an exterior view of the motor showing one end wall.

Fig. 4 is a detail section taken as indicated fat line t-- m Fig. I

' Fig. 5 is detail section of the rotor showing the intake ports, section being talen at a plane between the face of the rotor into which the ports are cut and the face of the stationary valve member through.

which the gas supply comes.

Fig. 6 is a detail section taken as indi cated at line 66 on Fig. The motor illustrated in the drawings comprises a stationary casing, 1, having two similar and symmetrically arranged eX- pansion chambers, 1, whose peripheral walls are connected by substantially, cyli.n drically curved portions, 1, between. which 4.5 there is snugly fitted a cylindrical rotor, .2.

central web portion, 2, located mid-Way between its ends and extending to a hub, 2",

which is fixed on a shaft, 3, journaled at 19, to in the end walls of the casing, 1.

The )articular motor illustrated is in tended i or use as an internal combustion engine, it being expected however that the explosive n'iixturc will be furnished to the "no motor under pressure, hence the motor itselt has no wovision for compressing the Specification of Letters Patent.

rotor is formed as a barrel having a Patented June 25%, it itd.

Serial No. @2679 gas previously to exploding it. Such gas is admitted through an intake pipe, 4:, comn'nr nicatin'g with an aperture, 5, in an annular valve member, 5, seated in a groove, 2, in the rotor, 2.

The cylindrical wall of the rotor, 2, is

formed with a series of recesses, 2, and associated grooves, 2, said grooves being a little more than semicircular in cross 'section. The cylindrically formed base, 6 0t" piston member, 6, being inserted in one of these grooves, 2", forms with it a kind of hinged connection between the member, 6, and the rotor, 2, the former being locked in the latter by reason of the overhanging term of the circular groove, 2*. time such gate or piston. is hinged in each of the grooves 2, and arranged to be accoimn0 dated-at the recess, 2 when folded down against the rotor, 2. in which position the back surface, 6, ot the piston member, 6, is cylindrieally curved to form a continuation of the cylindrical surface of the rotor, 2.

Leading from each of the recesses, 52",

' there yiS formed in the web portion, 2', of

the rotor, 2, a passage, 2, which terminates in an aperture opposite the valve member, 5, indicated in Fig. 2. Such aperture may be somewhat elongated by a recess in the face of the groove, 2, extended a little at 2 in the path of rotation of the mouth of the passage, 2 Now as the rotor, 2, revolves in the direction of the arrow, X, on Fig. l, the mouths of the passages, 2 will pass successively into registration with the port, 5, of the valve member, 5, letting the compressed gas from the pipe, 4, into the passages, 2 This registration is designed to occur just before the free end of the pisten or gate, 6, escapes from the circular portion, 1, of the casing Wall, and such registration should continue a. little after the said free end of the piston member has passed such point. The centrifugal force acting on the hinged piston, 6, as well asthe pressure of the gas confined in the passages, 2, will operate to throw the piston open with its outer edge against the all of the expansion chamber, 1 its the piston passes the recess in which the spark plug, 7, s p0 sitioned, the extended mouth, 2 will pass the aperture, 5 of the valve member, 5, closing off the passage, 2 and then by any suitable means associated with the rotor but not shown in the drawings,- the spark tilt til?

plug. 7, may be energized to ignite the mixture thus pocketed in the passage, 2, and around the plug, 7. The explosion of the mixture will then driv e the piston member, 6, through the expansion chamber, 1, and

past the exhaust port, 8, from which the the piston eventually folds is a sufficiently.

snug fit to provide a slight air cushion as the piston folds into place, thus eliminating noise at this point also.

For holding the valve member, 5, firmly on to its seat in the groove, 2, there is provided an adjustable pressure member, 8*, having a foot, 8, attached as by screws, 8", to the valve member, 5, and-having a cylindrically curved web. 8. terminating in' a flange, 8, adjacent to the end wall ofthe casing, 1. Threaded studs, 8 are slidably mounted in the casing wall, and additionally guided ina bracket, 9, carried thereon; springs, 8, reacting against said bracket, 9,

and adjustable nuts, 8 on the studs, 8*,

yieldingly force said studs against the pressure member, 8 through which said yielding pressure ,is transmitted to the valve member, 5. The studs. 8*, engage recesses in the flange, 8, of the. pressure member to restrain the latter and its connected valve member, 5. against rotation. It will be understood that two gas inlet pipes, 4, are'provided corre-.

sponding with the two expansionchambers, 1", and that likewise two pressure members, 8, areal-ranged tooccupy the angular space between said inlet pipes, 4. To take up the yielding pressure of the valve membe- 5.

against its seat on the rotor there is rovided an annular thrust bearing. 2 1

To render the expansion chambers as nearly gastight as possible the cylindrical walls, 1 ,.of the casing. 1. are. provided with packing strips, 10. extending parallel to the shaft axis in position for contact with the rotor as it revolves. The end walls of the expansion chamber. 1, are formed of packing plates. 11, yicldingly held in contact with the end surfaces, of the rotor by yielding and adjustable devices similar to those provided for the valve member. 5. Springs, 12, react against the bracket. 9, and adjustable nuts, 13, on studs, 13. whose inner ends abut the packing plates. 11, and transmit the. yielding pressure of the springs, 12. thereto. To render the packing of the water jacket wall, 2, independent of the plates, 11,

said plates are recessed to accommodate packing rings, 14, which are yieldingly forced into place by springs, 15, reacting against the bracket, 9, and adjusting nuts, 16, on studs 16. It may be noted that each of the studs, 8 13 and 16, is provided with lock nuts in addition to the adjusting nuts, and that as indicated in Fig. 3 the ends of the studs are flattened to engage in non-circular' openings in the bracket, 9, to facilitate adjustment of the nut.

The water jacket formed by the wall, 2, communicates with hollow annular chambers, 11*, in the packing plates, 11, which as indicated in Fig. 2 are connected in the water circulating system by inlet and outlet pipes, 17; similar pipes, 18, serve the annular water chamber, 19, of the peripheral casing wall.

1. In a rotary motor comprising a cylin' drical rotor, a piston hinged thereto and adapted to fold into the cylindrical surface of said rotor, a stationary casing having a partially cylindrical wall with an outwardly bulging portion forming an expansion chamber, said piston being dimensioned to fold out from' the rotor for contact with said. bulging wall, an adjustable end wall eXtending in a plane perpendicular to the axis of.

rotation, and formed to fit the outline ofsaidstationary casing. and means for adjusting said wall in the direction of said axis of rotation against the end of the rotor and its piston.

' bill ingwall, said rotor having an annular ital within its outer cylindrical wall and spaced therefrom to form. a chamber for cooling fluid. the end wall. of the casinghaving an annular flange. positioned to regthe cooling chamber, and conduits leading through said casing in registration with said chamber of the rotor to permit circulation of cooling fluid thercthrough.

In testimony whereof I have hereunto set my hand at Chicago, Illinois, this 22nd. day of July, 1915.

JOHN M QGR-ADY.

Witnesses:

Roar. N. BURTON, EDNA M. MacIn'rosn.

ister with said annular wall for closure of 

